Which of the following provides the strongest evidence for the classic Big Bang model?

Question

Quizplus · Accepted Answer

The cosmic microwave background (CMB) radiation is the afterglow of the Big Bang and is present throughout the entire universe. The CMB provides strong evidence for the Big Bang because it has a blackbody spectrum consistent with a very hot and dense early universe, and it is almost completely uniform in temperature in all directions, which supports the idea of a sudden expansion from a single point. The age of the Solar System (A) does provide evidence for the age of the universe, but it does not specifically support the Big Bang model. The abundance of galaxies (C) is a consequence of the Big Bang, but on its own, it does not necessarily provide strong evidence for the Big Bang model. Therefore, the correct answer is B.

Which of the Following Provides the Strongest Evidence for the Classic